and share experiences on ECE Regulation implementation with a continuing support from many Meeting on UN/ECE R13H, Braking for Passenger Vehicles . Regulation No H of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of passenger cars. ECE Regulation 90 (abbreviated “ECE R90”) is an ECE Regulation specifying design, construction, and performance requirements and test protocols for.

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For a Butterworth filter the attenuation is given by: This shall be measured as the brake pedal force is increasing. However, if the relative positions of the adhesion utilisation curves do not meet the requirements of paragraph 3. During the test, the braking control shall be fully applied for 20 seconds and released for 5 seconds ecee each actuation.

A vehicle equipped with a category 2 anti-lock system shall meet all the requirements of this annex, except those of paragraph 5. The requirements shall also be the same as for type-approval, except that in the test described in paragraph 5.

The braking force varies proportionally as the action on the control monotonic function. At ecf start of the tests, the tyres shall be cold and at the pressure prescribed for the load actually borne by the wheels when the vehicle is stationary.

The measurement shall be within the corridor for rce of increase in deceleration see Figure 3. For fourth order filters the data sampling frequency f s shall be greater than 13,4 f o.

That has a means to monitor driver steering inputs; and 2. Declaration of which is the secondary braking system: Average the results of paragraph b above to calculate the average brake factor and brake hold-off pressure rr13h all brake applications for the front axle.

ECE Regulation 90 – Wikipedia

Modification of vehicle type or braking system and extension of approval 8. The maximum time permitted between each test run is five minutes. At the end of the Type-I test described in paragraph r13g.

The combination eece shall be verified by calculations referring to the maximum braking performance actually achieved by the motor vehicle alone laden during the Type-0 test with the engine disconnected, using the following formula no practical tests with a coupled unbraked trailer are required:.

Anti-aliasing filters shall be of order 4 or higher and the relevant data r133h f max shall be 0 Hz to 30 Hz.

In case of compressed air brake systems, e. Moreover, for vehicles fitted with an electric regenerative braking system of category A, transient conditions as gear changes or accelerator control release shall not affect the behaviour of the vehicle in condition described in paragraph 1.


– Transport – UNECE

Normal reaction of road surface under dynamic conditions with the anti-lock system operative. Alternatively, in this case, an automatic actuation of the parking brake is allowed when the vehicle is stationary, provided that the above performance is achieved and, once applied, the parking brake remains engaged independently of the status of the ignition start switch.

All d13h acquisition and recording equipment shall support a minimum sample rate of 40 Hz on all channels. Once an emergency braking condition has been detected, systems sensitive to pedal force shall show a significant increase fce the ratio of:. The explanation shall also specify the vehicle speed range and the driving phases acceleration, deceleration, coasting, during activation of the ABS or traction control under which the ESC system can activate.

If the vehicle type submitted for approval pursuant to this Regulation meets the requirements of paragraphs 5 and 6 below, approval of that vehicle type shall be granted. Number of revolutions completed during a stop, to resolution not greater than one eighth of a revolution. This requirement is deemed to be satisfied if the batteries are at one of the state of charge conditions as listed in paragraph 1. A sampling rate for data acquisition of at least Hz is required.

The second peak yaw rate is defined as the first local yaw rate peak produced by the reversal of the steering wheel.

This Regulation does not cover: A continuous recording of the temperature measured in the centre of the path swept by the lining or at mid-thickness of the disc or drum or lining. This condition shall be met by means of devices which can easily be actuated when the vehicle is stationary, or by automatic means. Secondary braking system The secondary braking system shall make it possible by application of the service brake control to halt the vehicle within a reasonable distance in the event of failure of the service braking system.

Tests are conducted on a dry, uniform, solid-paved surface.

EUR-Lex Access to European Union law

A vehicle is deemed to be equipped with an anti-lock system within the meaning of paragraph 1 of Annex 5 to this Regulation, if one of the following systems is fitted:. The warning signal s mentioned above shall light up when the electrical equipment of the vehicle and the braking system is energised. Certain parts, such as the pedal and its bearing, the master cylinder and its piston or pistons, the control valve, the linkage between the pedal and the master cylinder or the control valve, the brake cylinders and their pistons, and the lever-and-cam assemblies of brakes, shall not be regarded as liable to breakage if they are amply dimensioned, are readily accessible for maintenance, and exhibit safety features at least equal to those prescribed for other essential components such as the steering linkage of the vehicle.


However, in the tests provided in paragraphs cee. It shall be possible to graduate this braking action. However, in the case of vehicles which are only f13h to comply with the requirements of paragraph 5. During the type-approval testing of a vehicle, the technical service shall verify conformity with the requirements contained in the present annex, by carrying out the following tests:.

If the time t cannot be completed in a single braking phase, further phases may be used, up to a maximum of four in all. List of vehicle data for the purpose of Regulation No 90 approvals. However, a device comprising a red tell-tale signal lighting up when the fluid in the reservoir is below a certain level specified by the manufacturer is permitted.

The service brakes shall be tested under the conditions shown in the following table:. A different type of braking equipment, with more particular reference to the presence or otherwise of equipment for braking a trailer or any presence of electric braking system; 2. Torque wheel tests see Appendix 2 to determine brake factors to generate adhesion utilisation curves; these curves shall satisfy the requirements in paragraph 3.

Therefore, sufficient energy level shall be ensured at the beginning of the test. Any separate electric regenerative braking control which is provided, shall not be used during the Type-0 tests. Determine the front versus rear brake pressure relationship over the entire range of line pressures.

The warning signal shall be constant not flashing.

Each test run shall be repeated once to confirm the wheel lockup sequence: Activation of the service braking system by the driver shall generate a signal that will be used to illuminate the stop lamps.

The coefficient of adhesion k shall be determined as the quotient of the maximum braking forces without locking the wheels and the corresponding dynamic load on the axle being braked.

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